private Script GenerateContent()
{
byte[] ub = null;
byte[] cb = null;
string scriptText = Generator.GetScript();
using (var ms = new MemoryStream(scriptText.Length))
{
using (var sw = new StreamWriter(ms, new UTF8Encoding(true)))
{
sw.Write(scriptText);
sw.Flush();
ub = ms.ToArray();
ms.Seek(0, SeekOrigin.Begin);
if (ms.Length > 4096)
{
using (var cs = new MemoryStream((int)ms.Length))
{
using (var gz = new GZipStream(cs, CompressionMode.Compress))
{
ms.CopyTo(gz);
gz.Flush();
}
cb = cs.ToArray();
}
}
}
var script = new Script
{
Hash = GetMD5HashString(ub),
Time = DateTime.UtcNow,
ScriptText = scriptText,
CompressedBytes = cb,
UncompressedBytes = ub,
Expiration = Generator.Expiration == TimeSpan.Zero ? DateTime.MaxValue :
DateTime.Now.Add(Generator.Expiration)
};
this.content = script;
if (Generator.GroupKey == null)
{
return(script);
}
TwoLevelCache.GetLocalStoreOnly("DynamicScriptCheck:" + this.Name, Generator.Expiration,
Generator.GroupKey, () =>
{
return(new object());
});
return(script);
}
}
private IScriptContent EnsureScriptContent(string name, IDynamicScript script)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
var cacheKey = "DynamicScript:" + name;
if (script is ICacheSuffix ics)
{
cacheKey = cacheKey + ":" + ics.CacheSuffix;
}
ScriptContent factory()
{
var content = utf8Encoding.GetBytes(script.GetScript());
return(new ScriptContent(content, DateTime.UtcNow, content.Length > 4096));
}
var groupKey = script.GroupKey;
ScriptContent getOrCreate()
{
if (groupKey == null)
{
return(cache.Memory.Get(cacheKey, script.Expiration, factory));
}
else
{
return(cache.GetLocalStoreOnly(cacheKey, script.Expiration, groupKey, factory));
}
};
var scriptContent = getOrCreate();
if (scriptLastChange.TryGetValue(name, out DateTime lastChange) &&
lastChange >= scriptContent.Time)
{
if (groupKey == null)
{
cache.Memory.Remove(cacheKey);
}
else
{
cache.Remove(cacheKey);
}
return(getOrCreate());
}
return(scriptContent);
}